I've been looking for a simple, lightweight commute bag for my Opsix and Modwave, and this is absolutely perfect, and quite affordable to boot.
Normally I prefer backpack designs, but with synths this size being lightweight and easy to handle, the messenger bag design actually works nicely AND it lets me carry a 2nd keyboard on a backpack bag.
Of course the protection in terms of padding is minimal, so it's not meant to be a heavy duty backstage case or flight case. I'd say it's more for commuting (in my case), or getting it to/from the car. But for that purpose, it's what I've been looking for.